Simplified validation, w/o using getmxrr(). We just need to be more careful

when editing the notes :-)

include/email-validation.inc

@@ -1,187 +1,26 @@
 <?php
-// using Manuel Lemos's email validation class
 
 /*
- * email_validation.php
- *
- * @(#) $Header$
- *
+ * email_validation.inc
+ * $Id$
  */
 
-class email_validation_class
-{
- var $email_regular_expression="^([-!#\$%&'*+./0-9=?A-Z^_`a-z{|}~ ])+@([-!#\$%&'*+/0-9=?A-Z^_`a-z{|}~ ]+\\.)+[a-zA-Z]{2,4}\$";
- var $timeout=0;
- var $localhost="";
- var $localuser="";
- var $debug=0;
-
- Function OutputDebug($message)
- {
-  echo $message,"\n";
- }
-
- Function GetLine($connection)
- {
-  for($line="";;)
-  {
-   if(feof($connection))
-    return(0);
-   $line.=fgets($connection,100);
-   $length=strlen($line);
-   if($length>=2
-   && substr($line,$length-2,2)=="\r\n")
-   {
-    $line=substr($line,0,$length-2);
-    if($this->debug)
-     $this->OutputDebug("< $line");
-    return($line);
-   }
-  }
- }
-
- Function PutLine($connection,$line)
- {
-  if($this->debug)
-   $this->OutputDebug("> $line");
-  return(fputs($connection,"$line\r\n"));
- }
-
- Function ValidateEmailAddress($email)
- {
-  return(eregi($this->email_regular_expression,$email)!=0);
- }
-
- Function ValidateEmailHost($email,$hosts=0)
- {
-  if(!$this->ValidateEmailAddress($email))
-   return(0);
-  $user=strtok($email,"@");
-  $domain=strtok("");
-  if(GetMXRR($domain,&$hosts,&$weights))
-  {
-   $mxhosts=array();
-   for($host=0;$host<count($hosts);$host++)
-    $mxhosts[$weights[$host]]=$hosts[$host];
-   KSort($mxhosts);
-   for(Reset($mxhosts),$host=0;$host<count($mxhosts);Next($mxhosts),$host++)
-    $hosts[$host]=$mxhosts[Key($mxhosts)];
-  }
-  else
-  {
-   $hosts=array();
-   if(strcmp(@gethostbyname($domain),$domain)!=0)
-    $hosts[]=$domain;
-  }
-  return(count($hosts)!=0);
- }
-
- Function VerifyResultLines($connection,$code)
- {
-  while(($line=$this->GetLine($connection)))
-  {
-   if(!strcmp(strtok($line," "),$code))
-    return(1);
-   if(strcmp(strtok($line,"-"),$code))
-    return(0);
-  }
-  return(-1);
- }
-
- Function ValidateEmailBox($email)
- {
-  if(!$this->ValidateEmailHost($email,&$hosts))
-   return(0);
-  if(!strcmp($localhost=$this->localhost,"")
-  && !strcmp($localhost=getenv("SERVER_NAME"),"")
-  && !strcmp($localhost=getenv("HOST"),""))
-     $localhost="localhost";
-  if(!strcmp($localuser=$this->localuser,"")
-  && !strcmp($localuser=getenv("USERNAME"),"")
-  && !strcmp($localuser=getenv("USER"),""))
-     $localuser="root";
-  for($host=0;$host<count($hosts);$host++)
-  {
-   if($this->debug)
-    $this->OutputDebug("Connecting to host \"".$hosts[$host]."\"...");
-   if(($connection=($this->timeout ? fsockopen($hosts[$host],25,&$errno,&$error,$this->timeout) : fsockopen($hosts[$host],25))))
-   {
-    if($this->debug)
-     $this->OutputDebug("Connected.");
-    if($this->VerifyResultLines($connection,"220")>0
-    && $this->PutLine($connection,"HELO $localhost")
-    && $this->VerifyResultLines($connection,"250")>0
-    && $this->PutLine($connection,"MAIL FROM: <$localuser@$localhost>")
-    && $this->VerifyResultLines($connection,"250")>0
-    && $this->PutLine($connection,"RCPT TO: <$email>")
-    && ($result=$this->VerifyResultLines($connection,"250"))>=0)
-    {
-     if($this->debug)
-      $this->OutputDebug("This host states that the address is ".($result ? "" : "not ")."valid.");
-     fclose($connection);
-     if($this->debug)
-      $this->OutputDebug("Disconnected.");
-     return($result);
-    } else { // Jesus M. Castagnetto
-     if($this->debug)
-      $this->OutputDebug("Unable to validate the address with this host.");
-     fclose($connection);
-     if($this->debug)
-      $this->OutputDebug("Disconnected.");
-     return false;
-    }
-   }
-   else
-   {
-    if($this->debug)
-     $this->OutputDebug("Failed.");
-    return false; // JMC
-   }
-   
-  }
-  return(-1);
- }
-};
-
-
-// checks that is an *outside* host, and removes the
-// SPAM protection, before passing the address to the validation class
 
+// checks that is an *outside* host, and tries to remove anti-SPAM bits
 function clean_AntiSPAM ($email) {
     $remove_spam = "[-_]?(NO|I[-_]?HATE|DELETE|REMOVE)[-_]?(THIS)?(ME|SPAM)?[-_]?";
     return eregi_replace($remove_spam,"",trim($email));
 }
 
 
-function is_emailable_address( $email, $debug=0 ) {
+function is_emailable_address( $email) {
     $hosts_regex="lists\.php\.net|chek.*\.com";
     $excluded_hosts = ereg($hosts_regex,$email);
+	$email_regex="^([-!#\$%&'*+./0-9=?A-Z^_`a-z{|}~ ])+@([-!#\$%&'*+/0-9=?A-Z^_`a-z{|}~ ]+\\.)+[a-zA-Z]{2,4}\$";
     if (!$excluded_hosts && $email != "") {
-        $validator = new email_validation_class;
-        $validator->timeout=10;
-        $validator->debug=$debug;
-        return $validator->ValidateEmailBox($email);
+		return eregi($email_regex, $email);
     } else {
         return false;
     }
 }
-
-// test of the validation function
-// remove this part once all changes seem to work
-/*
-$test_add = array (
-    "wrong-email-address@lists.php.net","jcastagnetto@yahoo.com", 
-    "some-wrong@asdas.com", "jcastagnetto-NO-SPAM@yahoo.com", 
-    "jcastagnetto@NoSpam-yahoo.com", "jmcastagnetto@chek2.com", 
-    "jcastagnetto-i-hate-spam@NOSPAMyahoo.com", 
-    "asasasd324324@php.net", "jcastagnetto-delete-this-@yahoo.com",
-    "wrong-address-with@@@@-remove_me-and-some-i-hate_SPAM-stuff");
-
-while (list(,$v) = each($test_add)) {
-    echo "The address: $v (".clean_AntiSpam($v).") is";
-    if (!is_emailable_address(clean_AntiSPAM($v)))
-        echo " not";
-    echo " valid\n";
-}
-*/
 ?>